The new event data objects have lrecord, rather than lcrecord headers. When one of these objects is passed to mark_object in alloc.c a GC Error Checking assertion fails. This failure happens because the basic_p flag is false and the pointer is mis-cast to an lcrecord_header pointer. Defining the lrecord implementation structure for these objects with DEFINE_BASIC_LRECORD_IMPLEMENTATION instead of DEFINE_LRECORD_IMPLEMENTATION causes the basic_p flag to be set to true when the object is allocated. src/ChangeLog addition: 2002-08-12 David Bush <David.Bush(a)intel.com&gt; * events.c: Use DEFINE_BASIC_LRECORD_IMPLEMENTATION instead of DEFINE_LRECORD_IMPLEMENTATION for the new event data objects to cause the objects to be flagged as basic. XEmacs source patch: Diff command: cvs -q diff -u Files affected: src/events.c Index: src/events.c =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/src/events.c,v retrieving revision 1.56 diff -u -r1.56 events.c --- src/events.c 2002/08/01 08:28:36 1.56 +++ src/events.c 2002/08/13 02:23:33 ＠＠ -634,67 +634,76 ＠＠ magic_data_hash (Lisp_Object obj, int depth) {assert(0); return 1;} -DEFINE_LRECORD_IMPLEMENTATION ("key-data", key_data, - 0, /*dumpable-flag*/ - mark_key_data, - print_key_data, 0, - key_data_equal, key_data_hash, key_data_description, - Lisp_Key_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("button-data", button_data, - 0, /*dumpable-flag*/ - mark_button_data, print_button_data, 0, - button_data_equal, button_data_hash, button_data_description, - Lisp_Button_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("motion-data", motion_data, - 0, /*dumpable-flag*/ - mark_motion_data, print_motion_data, 0, - motion_data_equal, motion_data_hash, motion_data_description, - Lisp_Motion_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("process-data", process_data, - 0, /*dumpable-flag*/ - mark_process_data, - print_process_data, 0, - process_data_equal, process_data_hash, process_data_description, - Lisp_Process_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("timeout-data", timeout_data, - 0, /*dumpable-flag*/ - mark_timeout_data, - print_timeout_data, 0, - timeout_data_equal, timeout_data_hash, timeout_data_description, - Lisp_Timeout_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("eval-data", eval_data, - 0, /*dumpable-flag*/ - mark_eval_data, - print_eval_data, 0, - eval_data_equal, eval_data_hash, eval_data_description, - Lisp_Eval_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("misc-user-data", misc_user_data, - 0, /*dumpable-flag*/ - mark_misc_user_data, - print_misc_user_data, - 0, misc_user_data_equal, - misc_user_data_hash, misc_user_data_description, - Lisp_Misc_User_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("magic-eval-data", magic_eval_data, - 0, /*dumpable-flag*/ - mark_magic_eval_data, - print_magic_eval_data, 0, - magic_eval_data_equal, - magic_eval_data_hash, magic_eval_data_description, - Lisp_Magic_Eval_Data); - -DEFINE_LRECORD_IMPLEMENTATION ("magic-data", magic_data, - 0, /*dumpable-flag*/ - mark_magic_data, print_magic_data, 0, - magic_data_equal, magic_data_hash, magic_data_description, - Lisp_Magic_Data); +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("key-data", key_data, + 0, /*dumpable-flag*/ + mark_key_data, + print_key_data, 0, + key_data_equal, key_data_hash, + key_data_description, + Lisp_Key_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("button-data", button_data, + 0, /*dumpable-flag*/ + mark_button_data, print_button_data, 0, + button_data_equal, button_data_hash, + button_data_description, + Lisp_Button_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("motion-data", motion_data, + 0, /*dumpable-flag*/ + mark_motion_data, print_motion_data, 0, + motion_data_equal, motion_data_hash, + motion_data_description, + Lisp_Motion_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("process-data", process_data, + 0, /*dumpable-flag*/ + mark_process_data, + print_process_data, 0, + process_data_equal, process_data_hash, + process_data_description, + Lisp_Process_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("timeout-data", timeout_data, + 0, /*dumpable-flag*/ + mark_timeout_data, + print_timeout_data, 0, + timeout_data_equal, timeout_data_hash, + timeout_data_description, + Lisp_Timeout_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("eval-data", eval_data, + 0, /*dumpable-flag*/ + mark_eval_data, + print_eval_data, 0, + eval_data_equal, eval_data_hash, + eval_data_description, + Lisp_Eval_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("misc-user-data", misc_user_data, + 0, /*dumpable-flag*/ + mark_misc_user_data, + print_misc_user_data, + 0, misc_user_data_equal, + misc_user_data_hash, + misc_user_data_description, + Lisp_Misc_User_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("magic-eval-data", magic_eval_data, + 0, /*dumpable-flag*/ + mark_magic_eval_data, + print_magic_eval_data, 0, + magic_eval_data_equal, + magic_eval_data_hash, + magic_eval_data_description, + Lisp_Magic_Eval_Data); + +DEFINE_BASIC_LRECORD_IMPLEMENTATION ("magic-data", magic_data, + 0, /*dumpable-flag*/ + mark_magic_data, print_magic_data, 0, + magic_data_equal, magic_data_hash, + magic_data_description, + Lisp_Magic_Data);